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Summary
This report describes the preliminary assessment of the air quality in Ploiesti based on AQ modelling. Ploiesti has been chosen as the first case because input data is available for modelling during the mission of February/March 2002. The AQ Assessment Team at ICIM will carry out the preliminary assessment based on modelling for the other pilot regions using the present report as an outline. The preliminary assessment covers the four pollutants listed in the first
daughter directive: NO2, SO2, PM10 and lead.
Preliminary assessment based on AQ modelling
According to the EU directives a preliminary assessment is defined as: 'Member States which do not have representative measurements of the levels of pollutants shall undertake series of representative measurements, surveys or assessments in order to determine the future requirements of assessment for the zones and agglomerations'.
The preliminary assessment has been based on indicative passive sampling campaigns and AQ modelling since representative high quality monitoring data does not exist in Romania at present.
Therefore, AQ modelling has become an important part of the preliminary assessment of air pollution in the selected Pilot areas in the IDAQ project.
NERI AQ models
AQ models developed at NERI in Denmark have been applied. The OML model has been used to model urban background concentrations. The OML model is a modern multiple source plume
model. The Danish EPA recommends the OML model for regulation of industrial sources in Denmark. The OSPM model has been used to model street concentrations in selected street canyons. The OSPM model is a combined plume and box model describing the main
physical and chemical processes in a street canyon. The Danish EPA recommends the OSPM model for AQ assessment in streets. The expert institutions at ICIM should primarily use the dispersion models for AQ assessment according to EU requirements but they could also be used by the local EPIs for air quality management e.g. impact assessment of single point sources for permits, assessment of street concentrations in selected streets etc.
AQ modelling training performed by NERI experts has been provided to Romanian AQ specialists including ICIM experts. The training started with the two-week training course held in Denmark in September 2001. Steen Solvang Jensen from NERI installed the NERI models on the IDAQ computers during his mission in November/December. A two-day training course was also
performed in Bucharest in November 2001, also involving more experts from ICIM.
Input data
The models require comprehensive input data on source and surrounding characteristics, emissions, meteorology and regional concentrations. All this data have been collected through: EPIs, Municipality of Bucharest, RAR and INMH.
AirQUIS
The AirQUIS AQ management system developed by NILU in Norway has been used as a database to store collected monitoring and emission data from point and area sources. Data from the AirQUIS database were prepared for the use in the models. Interfaces between AirQUIS output data and NERI-models input have been prepared.
NERI and AGRARO were introduced to AirQUIS during a four-day training course in Norway in September 2001. A one-day AirQUIS workshop was undertaken with 27 participants from MWEP, ICIM, EPIs and local consultants, and followed up by on-the-job training for
the specialists with daily work with AirQUIS. The AirQUIS system was installed at the project office at MWEP 28 September 2001, and on 7 February 2002 it was transferred to the project office at ICIM to serve the ICIM AQ Assessment Team.
Meteorological data
INMH has been contracted to provide meteorological data for the OML model based on the OML meteorological pre-processor. A NERI expert Helge Rørdam Olesen has evaluated the data and
introduced the ICIM staff to the OML meteorological pre-processor during a short mission in February 2002.
Traffic data for emission estimation
RAR has been contracted to provide data on car fleet characteristics from their comprehensive database and temporal variation of traffic for emission estimation together with a simple guideline offered to the EPIs to count traffic in selected street canyons in the pilot regions.
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